O-LevelChemistryOrganic Chemistry5070/11 · May/June 2023 · Q331 Mark

The structures of three compounds, W, X and Y, are shown. [Structural formulas for W (CH3-C(OH)2-CH3), X (CH3-CH2-COOH), Y (CH3-CH(OH)-CH2OH)]. Which statements about these three compounds are correct? 1 W and Y are both alcohols and X is a carboxylic acid. 2 W, X and Y have the same molecular formula. 3 W and Y are structural isomers of each other.

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A1 and 2 only

B1 and 3 only

C2 and 3 only

D1, 2 and 3

✓ Correct answer

B: 1 and 3 only

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Topic: Organic Chemistry, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2023 Paper 1 Variant 1, question 33.

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